Certified Air Tightness Tester Scheme

Under revised building regulations which came into force in January 2008, air tightness testing is mandatory for all dwellings. Further improvements to backstop performance levels have come into effect with the publication of the updated Technical Guidance Document Part L - Conservation of Fuel and Energy - Dwellings (2011) to the Building Regulations.

What does the scheme involve?

Under the scheme, NSAI inspectors assess the operations and procedures of air tightness testers. NSAI inspectors witness an airtightness test against the requirements of I.S. EN ISO 9972:2015.
Inspectors also carry out an assessment of:

A number of Airtightness test reports.

That appropriate records are maintained for completed tests.

Test equipment is adequately maintained and under calibration.

Health & Safety documentation is in place.

When our inspectors are satisfied that the tester is in compliance with the scheme requirements, the applicant company receives an NSAI Certificate of Registration.

What are the benefits?

For air tightness testers, the benefits of I.S. EN ISO 9972:2015 registration are far-reaching.

The scheme:

Helps developers and householders demonstrate compliance with the higher levels of energy conservation required under the Building Regulations 2011 Part L Technical Guidance Document

Entitles the air testing company to use its NSAI registration number in business transactions

Lists the company on the NSAI-maintained Directory of Registered Air Tightness Testers

Provides independent reassurance to customers of the reliability of the air testing company.

1 Year one only 2 Applies year two and onwards 3 Companies who have successfully completed a full Single Fan registration audit may apply to add 3 additional (4 in total) airtight testers from that company subject to the folllowing restrictions. Additional airtight testers must operate in accordance with the registered companies Quality Assurance (QA) manual. Additional airtight testers must submit a sample airtight test report in accordance with I.S. EN ISO 9972:2015 and the companies QA manual. 4 Desktop review 5 Annual Surveillance Audit for additional testers will be combined with the Annual Surveillance Audit of the original registered tester from that company. 6Adding Multi Fan post single fan registration will necessitate an additional audit however if this audit is coupled with an annual audit the cost will be reduced to €550. All rates are Excl. VAT at 23%